Nut-lock.



C. R. MERVIN.

NUT LOCK.

APPLIOATION FILED AP11.18,1908.

926,953. Patented July 6, 1909.

l lmmum @Mmmm l lZ/Z/ CHARLES R. insaymI or s wnn'r, mano.

NUT-Loox.-v

Specification of. Letters Patent.,

' 'patented mijn, 190e.'

Appncmun med April l1er, 1 9pa. serial no. 427,689.

Tf1-ail whom it may concem: i Be it known that L-CHARLES' R. Mnnviini a citizen of the United States, residing at Sweet, in the county of Boise and State of daino, have invented a new and useful lmnoyeinent in NutQLooks, of which the -fol-v .owing is a specification. j

This invention is an improved'construction of nut lock, the object being to provide an exceedingly cheap and' highly efficient construction of lock which can be used in'.

connection with the ordinary bolts and nuts nowin comm-on use.

"With this object in View, the invention consists in the I iovel featurel `ofconstrnction y and combination ofparts, all of which will be fully described and hereinafter'pointed out in the claims. `v l ln vthe drawing "forming a part lof this specicationz-Figure l-isa sectional eleyation showing the Various parts of my in yention in process of being assembled.' Fig. 2' is a similar View showing the nut screwed to place and locked. Fig. 3 is a sectional elev Vation on lthe line 3-.-3 of' Fig. 1. Fig. 4 is a detail perspective View of the locking ring, Y

and Fig. 5

S e `face View, of the llocking Washer.

.ln carrying out my invention I employ the ordinary bolt A and' the ordinary construction of nut B." The locking washer@ is preferably made in the shape of a star and is therefore pro-vided with va plurality of wings or lobes C which are adapted to beturned up alongside the nut for the purpose of lock? ing said 'mit against-rotation, as most clearly shown in Fig. 2.

The central opening C2 of the .Washer has the notches lor recesses 'C3l leading into the same, said recesses bemg preferably four 1n number and arranged at equi-distantpoints and on radial lines, as most clearly shown 1n Fig. 5. Y

The washer C is which dts loosely over the bolt and is rovided with a depending lug D vwhich is adapted to rit into one of the recesses C? and a tooth DE is formed. upon the interior of the` ring', adjacent the finger D and projects 4inwardly a snlicient distance to engage the thread of the holt as the nut is screwed down, 1

placed/ upon the bolt and:V lthen upon this washer I arrange a ring D4 .projectingfinwardlysai lto engage the thread lof the'bolt when said soV that as the ring is forced down, the said' 'nger riding upon the outer ed e of the recess @mi twin Abe,no@anni "the maar' ne@ ef 'the C? will cause .the tooth Dzto e forced'into the thread of the bolt as most 'clearly ehov'vnv in Fig. 2, andin this manner the ring is se-` curely lockedv to thebolt` and by means of the linger andthe `notched Washer, said washer is firmly-held .against rotation, and after being,4 thusfsecurely `locked against rotation, one "wing or'lobe thereofoan be turned up alon'g" side the nutjand lthereby securely hold said nut in a locked position.

It Will Ethus be's'een that I royide'uan eX# ceedingly simpleand highlye cient form of .v

lock, V

Havin thus fully described my invention,- Whatjlf c aim'as newr Letters Patent is '71o andl desire to secure by i 1. The combination with abolt vandin 1f1t, of l a Washer havin l a plurality of 4flexible-wings 1- arranged yon said-bolt, the' side walls of the opening of the washer being kprovided with j oppositely disposed recesses, a` ring arranged adaplted to fit'in one o f the rec r'ifj-th'eV upon the interior-of the'sameadjaoent'the lug, the outer face of the lug 'being curyedor.

.onsaid bolt between the Washer andnut, said 1 ,ring being provided with a1 depending lug l .80 was er, said ring-being-provided 'withalr toothf I inclined adapted tobe forced down by the cess, which will, force' the tooth into engaligge'ei-fk ment with the threads of the-bolt.

. 2. The combination` with a bolt and nut, i'

a Washer having a plurality of-wings; the'side walls ofthe centralopening ofthewasherbearrangeding recessed toforrn notches, aring between the nut and Washer, said rmghavlng a lug adapted tot into a notch of the Washer the outer face o f said lug being inclined and a adjacent .the lug-and tooth beingadapte'd tooth carried by. the ring ring is forced into contact with the washer,y

one wing fof said washer being adapted to be' turned up alongside a face of the nut, for the purpose set forth.A 'f

CHARLES- R. MERVIN.

Vl/Yitnesses:

Gno. Ross7 SAMUEL lT. LILLY. 

